When I was updating this page the price was $52.99 for RTL-SDR Blog V3 RTL SDR R820T2 RTL2832U 1PPM TCXO SMA Radio 500 kHz-1.7 GHz (in Banggood). Check coupons or create price alert down below. You probably want to know what is the best price?
RTL-SDR Blog V3 RTL SDR R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio 500 kHz-1.7 GHz Dipole Antenna
Latest coupon code price check (UTC time):
Banggood ($52.99)
Banggood warehouse is located in China. Is it a low price? This is the best price in history according to CouponsFromChina database! Only one coupon available!
Link: Banggood product page
Price without coupon: $57.99
1. ($52.99): BG2a5a74
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for RTL-SDR Blog V3 RTL SDR R820T2 RTL2832U 1PPM TCXO SMA Radio 500 kHz-1.7 GHz.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).